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  MORE than a supplier     HV Power Customer Newsletter March 2017    
           
        March activities    
 

    In this issue:

Photo - Warwick Beech

 Commentary

The journey and destination

Imagine asking a taxi to take you somewhere, but you’re not actually sure where …yet.
A helpful driver might be able to get started in the general direction and be prepared to narrow it down as you go. ‘Head into town, I will know when I get there’ style.

Imagine giving a taxi driver a series of left, right, straight ahead instructions, that get you exactly to where you need to go, but with no variation permitted by the driver who might have been able to take advantage of local knowledge of perhaps a better route – given the time of day, or road works etc.

Customer inquiries can be a bit like this. Some people know exactly what they want, others can be familiar with one solution but have not considered alternatives, while some know they simply have a problem - but no clue what the solution could look like.

At HV Power we often refer such enquiries to Our six honest serving-men (a Poem by Rudyard Kipling). These guys really sort out the critical details of both the journey and the destination.

I keep six honest serving-men
  (They taught me all I knew);
Their names are What and Why and When
  And How and Where and Who

We recommend you put these guys to the test next time a project, journey or destination is not clear to you.

 

Regards

Warwick Beech

   
News

We are light on news this month, but not on activity.

Warwick Beech has been across to Bangkok for Siemens Distribution & Automation Training, including RMU feeder automation, automatic transfer systems, self-healing network design software and the A-8000 series of modular RTUs.

John Parker is off for two weeks of training and discussions at A.Eberle in Germany – continuing to build the strong technical and commercial relationships. It is these relationships that provide the large direct benefit to our customers enabling us to offer the best support . Visits to Siemens, and factory training on supporting the MTE HYDROCAL range of DGA monitors is also on his agenda.

Warwick Beech and Marcus Ling are ‘on the road again’ in the North Island, with the 8DJH Siemens Ring Main Unit and an example of our flat pad concrete base for outdoor Class A enclosures.

Mike Strong and Melbourne-based Grant Wells will be exhibiting products at Cigre’s SEPAC conference in Melbourne where A.Eberle engineer Gerd Kaufmann will be delivering a paper.

We have two engineers from Horstmann Germany out to New Zealand in mid-March to discuss some upcoming new products. Customer visits are planned so this supplier’s engineers are exposed first hand to some genuine Kiwi requirements. We will also be holding an open presentation in Christchurch on the morning of 14 March (Fault Passage Indicators for RMUs, underground and overhead lines). Contact Mike Strong for further details.

In March also we have two engineers from EGE (from the Czech Republic) coming to talk to us about Dynamic line balancing systems (capacitive balance), before they follow up on our first and very successful commissioning of a traditional Petersen Coil-based compensated power system (Melbourne).

 

   
      SIPROTEC 5 & IEC 61850 – The best choice in advanced protection    
     
SIPROTEC 5 - Trustworthy

Past performance is a strong indicator of the future. Looking at Siemens' more recent history, they have been at the forefront of each major development – with a standards compliant (and interoperable) solutions.

2004 Official publication of IEC 61850
2004 (November) Siemens recognised with first practical installation (ATEL in Switzerland)
2005 Siemens were the first independently- certified IEC 61850 Ed 1 server
2005 HV Power assist Vector with first Australasian use of IEC 61850
2008 Siemens announce over 100,000 protection devices with IEC 61850 delivered
2012 Official publication of IEC 61850 Edition 2
2012 SIPROTEC 5 released supporting Edition 2 (SIPROTEC 5, released in 2010)
2012 SIPROTEC 5 first certified IEC 61850 Edition 2 server
2013 PRP/HSR available
2015 Siemens SICAM PAS first certified IEC 61850 Edition 2 client

For simply the best expertise and support - make HV Power & Siemens your IEC 61850 partner!

 

   
      Are you limited by a 10-minute PQ measuring interval?    
     
WinPQ mobil V3.1.4 200 ms and 3 s data classes

The majority of Power Quality standards require a 10-minute averaging period to be used for voltage and other measurements.

Human nature however, is to set up the PQ loggers to measure with shorter averaging intervals, such as 60 seconds, due to fear of ‘missing’ something, and the belief that more information must be better. However, this can dramatically increase the workload of the person doing the analysis – as they number crunch to average each 10 of the 60-second samples back to obtain the required 10-minute data.

With A.Eberle PQ-Box 100, 150 and 200, there is no need to do this. Simply record at the 10-minute interval because:

  1. the PQ-Box, in addition to logging the 10-minute value, also records the maximum and minimum 10 ms (half cycle) value (with timestamp) during that period - this provides the 10-minute data straight/ready for PQ analysis, but also provides the faster maximum and minimum values so the worst-case extremes can be checked
  2. the PQ-Box has high-speed RMS recorders that can be set to sample when, for example the 10 ms values are above or below a set threshold (10 % is the default) - thus with this extra recorder, then is little need to log to the main data values faster than 10 minutes.

However, if you can’t convince the others you work with to stick to 10-minute intervals – all is not lost. The PQ-Box 100/150/200 feature a 'Power Interval', which is a separate data class of power/energy values that can be set to 10, 15 or 30 minutes averaging interval. The intended use of the Power Interval is to be set to match the billing/metering cycle, allowing the billing/metering values to be checked. However, as the Power Interval data class also includes voltage data, that voltage data can be used for PQ analysis, while a faster measuring interval is used for the main recorder.

Finally a recent update to the more powerful PQ-Box 150 and 200 has seen an optional 3-second and 200 ms recorder class added. Therefore a 10-minute measuring interval can be used, with parallel data recorded with 3-second and/or 200 ms increments – satisfying the needs of all.

 

   
      Reverse Power Flow & Transformer Voltage Regulation    
     
Reverse power flow and REG-DA

As more distributed generation is imbedded in the network, transformer reverse power flow is becoming more prevalent, and transformer voltage regulator design needs to consider this. 

A short HV Power Technical Note details three common methods, each of which the A.Eberle REG-D/DA voltage regulators are capable of.

See our 'Reverse Power Flow' document at the top of the list of other application notes in our Voltage Regulator Technical Library.

 

 

   
      NTS 03-G + 4-Port NTP, 6 IRIG-B output clock for utilities    
     

We believe this configuration is worth repeating. Initially detailed in our November newsletter, but since renamed, the 'NTS 03-G+' 4-Port NTP & 6 IRIG-B output clock is now shipping. Traditionally, substation devices have used IRIG-B time protocols whereas IT equipment has used NTP protocols and GPS clocks have been designed with the needs of one or the other in mind. With modern protection relays using IP communication networks, there is an increasing demand for NTP and IRIG-B within the substation

Tekron NTS 03-G NTP/IRIG-B clock
Tekron NTS 03-G+ with new expansion port

The NTS 03-G+ series has a variety of outputs covering most modern substation applications. With the new expansion option the NTS 03-G+ offers:

  • 1 x USB interface for local setup
  • 4 x Ethernet interfaces (one is copper, but the other three can be spec’d as copper or ST fibre)
  • 2 x BNC connectors with IRIG-B (switchable between 0-5 V DCLS or 8 V AM-IRIG-B)
  • 4 x Programmable outputs:
    • 4 x ST fibre outputs, or
    • 4 x 0-5 V programmable outputs (BNC connectors) - ideal for DCLS IRIG-B or pulse-per-second applications
  • Option for PTP protocol

This configuration allows (for example):

  • One Ethernet Interface to be reserved for Remote Engineering Interface
  • Three other Ethernet Interfaces to be set up as NTP servers, providing IEC 61850 devices with primary, secondary and tertiary NTP sources.
  • AM-IRIG-B outputs to selected IEDs
  • DCLS IRIG-B outputs to selected IEDs
  • Pulse per second output to selected IEDs
  • Other needs may be provided by use of Isolated Timing Repeaters (for example, Fibre time signal output, HV switched MOSFET output etc), or with PTP protocol and PTP Translator, serial string output

The NTS 03-G+ also features an option for a second power supply. The second power supply can be an alternative voltage, allowing the device to be powered from (for example) the 110 Vdc substation supply and the 48 Vdc comms supply. An IEC 320 power socket for 230 Vac applications is available for UPS-backed-up SCADA/control room environments.

All this - equipped with a quality long-life outdoor antenna and quality antenna cable – for under NZ$6,500 (configuration-specific). This latest release hits the sweet spot of features, performance and price for the typical New Zealand lines company.

Tekron - New Zealand-designed and manufactured, with a 10-year warranty and the highest level of support!

Download the datasheet.

 

   
      DIGSI 4 & DIGSI 5 Training – free online    
     
You Tube DIGSI training videos

Don’t have time to attend one our one day training sessions? Then we remind you of the You Tube DIGSI 5 and DIGSI 4 Tutorial videos. You can find links to these on our website Technical Library.

They provide an insight to the general DIGSI methods. Otherwise call us for help, or to discuss how we can provide customised one-on-one training session.

 

 

   
Copyright 2017 HV Power Measurements and Protection Ltd